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      03-18-2010, 12:36 AM   #40
DLSJ5
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Drives: 2016 F82 M4 ZCP
Join Date: Dec 2006
Location: CA

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Quote:
Originally Posted by SoreHead View Post
A question. If you get the system tuned for 91 octane can you run 94 octane? In other words, is going up that far ok or is that risking problems? I run Sunoco 94 octane.

Is it better to tune for 94 and occasionally run 91 or tune for 91 and occasionally run 94?
No there would be no issues, and normally one might say that is a silly question, but based on this thread I understand your concerns. After reading this thread, someone could infer that race gas might shut off "KD" on your sophisticated S65 ECU engine management, and your engine will blow, I can assure you many here have ran race gas, even C16, no failures so far.
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08 E92 M3 DCT - Bolt Ons - 60-130MPH 10.71s - 11.88 @ 118MPH - 377WHP
ESS VT2-625 SC 60-130MPH 6.80s - 11.30 @ 129.3 MPH 586WHP / 379WTQ
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Shift-S3ctor E92 M3 - 1/2 Mile Trap Speed WR - 174.13 MPH
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